Fix segfault on build with empty %prep section

Signed-off-by: Panu Matilainen <pmatilai@redhat.com>

diff --git a/build/parsePrep.c b/build/parsePrep.c
index c0508ec..9e61dde 100644 (file)
--- a/build/parsePrep.c
+++ b/build/parsePrep.c
@@ -504,7 +504,7 @@ int parsePrep(rpmSpec spec)
        }
     }
 
-    for (ARGV_const_t lines = saveLines; *lines; lines++) {
+    for (ARGV_const_t lines = saveLines; lines && *lines; lines++) {
        res = 0;
        if (rstreqn(*lines, "%setup", sizeof("%setup")-1)) {
            res = doSetupMacro(spec, *lines);